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API Mill ehin bits IDC217 12 1/4 inches (311mm) fun liluho daradara
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Liluho iye owo kekere IDC217 14 3/4 inches (374mm) fun apata lile
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liluho osunwon IDC217 17.5 inches (444.5mm)
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4 1/4 Inches PDC Fa Bit 3 Blades
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API factory ti TCI tricone bit IDC617 5 5/8" (142.9mm)
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API rotary tricone bit IDC617 6 ”(152mm) fun liluho daradara
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Tricone rock bit IADC617 8 1/2" (215.9mm) fun liluho daradara
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API olupese ti tricone rock bit IDC617 9 7/8 inches (250mm)
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API factory ti tricone rola bit IDC617 12 1/4 inches (311.1mm)
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API factory ti apata liluho die-die IDC617 17 1/2 inches (444.5mm) ni iṣura
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API tungsten carbide ifibọ apata dill bit IAC627 3 7/8 ″ (98mm) ni iṣura
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Rotari rola bit IDC627 8 1/2″ (215mm/216mm)